Take a round, flat tortillas shell (not a crispy one, but the flat ones in the refrigerator section of the store). Sprinkle on grated cheese - can be Cheddar, Mozzarella, American, etc. If you want to, you can sprinkle on cooked crumbled ground beef, chopped tomatoes, etc. Melt in 350 degree oven for 5 minutes or microwave until melted. Cut in pie shaped wedges.